Why is my screen blank

@laurileecooper I would treat this like any other water immersed device. The thing to do is to clean it.

Disassemble your phone using these guides Your phone has two boards you want to worry about. One is the charging board and the other is the main board. You must remove all EMI shields from the main board for sure. If you do not remove those, you might as well not do anything. After you removed those, clean the whole boards, connectors and all with +90% isopropyl alcohol. Follow this guide, and even so it was written for an Apple 3G iPhone, all the points are still pertinent to your phone as well. While you clean your boards, check for any obvious damage, like burned or missing components etc. When everything is properly cleaned, replace the battery. All these steps are to avoid delayed failure caused by corrosion. Best thing to do would be to clean it with an ultrasonic cleaner, but if you do not have access to one, this will at least help. Once all this is done, reassemble your phone and reevaluate. Until it is cleaned, everything will only be a guess. It is possible that you have a bad LCD and replacing the display assembly may fix it. Even with all this, water damage has only a small chance to be fully repaired, but at least you can give it a try.